Starting off with the input panel on the back of the projector, you will find all the requisite ports you need to successfully present in this day and age. To start, in the bottom left corner, you will find your power connection. Above that and to the left is where you will find all 3 audio ports, with audio in 1, audio 2, and audio out stacked from top to bottom respectively. Moving over, you have an S-Video cable input right above a composite video input.
To the right of the video inputs, you have two computer/vga cable inputs stacked on top of one another. Next to the right you have your monitor out input, followed by the single HDMI input, which is then followed by the RS-232 port, a single USB-B port, a single USB-A port, and lastly a Wireless Lan Ethernet connection. Right underneath the Ethernet port you also have your Kensington Lock location.
As you shift up above the input panel to the top of the IN2128, the projector’s control panel is located in the right half in the back of the projector. As you can see, the buttons are pretty small/narrow, and as one might expect, this did make the buttons somewhat difficult to press. I prefer the control panel design that InFocus had on the cheaper IN116xa that I just reviewed, those buttons were wider, and just had a much better feel when clicking. Not a deal breaker but I expected a bit better from a $1,000 projector.
Anyway, there is 4 columns of buttons. The power button is furthest to the left, in its own column. In the next column, from top to bottom, you have a Menu/Exit button, an arrow button to move the cursor left, and the Blank button to a/v mute the screen. In the next column, you have an arrow button to move the cursor up, and which doubles as a button for keystone correction. Below that there is an Enter button, followed by an arrow button to move the cursor down plus keystone correction. In the last column on the right side, you have a button for autosearch, a right arrow cursor button, and a source button to find the source without autosearch.